Ext.define("Extend.Utils", {
            statics : {
                getParam : function(name)
                {
                    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
                    var r = window.location.search.substr(1).match(reg);
                    if (r != null)
                        return unescape(r[2]);
                    return null;
                }
            }
        });